200-150 · Question #22
What is the maximum distance that is supported by Cisco passive Twinax cables?
The correct answer is A. 5m. Cisco passive Twinax Direct Attach Copper (DAC) cables support a maximum reach of 5 meters due to the absence of signal amplification circuitry.
Question
What is the maximum distance that is supported by Cisco passive Twinax cables?
Options
- A5m
- B3m
- C4m
- D10m
How the community answered
(28 responses)- A86% (24)
- B4% (1)
- C4% (1)
- D7% (2)
Why each option
Cisco passive Twinax Direct Attach Copper (DAC) cables support a maximum reach of 5 meters due to the absence of signal amplification circuitry.
Cisco passive Twinax cables top out at 5 meters because they rely solely on the copper conductor without active electronics to boost the signal; beyond this distance, signal integrity degrades below acceptable thresholds, which is why active DAC cables with onboard amplifiers are required for distances up to 10 meters.
3 meters understates the actual maximum - passive Twinax cables are rated for up to 5 meters.
4 meters is also below the correct 5-meter maximum specified for Cisco passive Twinax cables.
10 meters is the maximum distance for active Twinax (active DAC) cables, which include signal-boosting electronics not present in passive cables.
Concept tested: Cisco passive Twinax DAC cable distance limitations
Source: https://www.cisco.com/c/en/us/products/interfaces-modules/direct-attach-cables/index.html
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